How can touch typing quickly but accurately improve your earnings (the money you can make)

Doing so would not only increase your productivity potential / but also increase your productivity STANDARDS for certain jobs (e.g. data entry; secretarial work), which is a direct skill that is valuable to employers.  Furthermore, if you work in a a secretarial job, this would allow you to accomplish tasks such as "touch typing" a lot faster (without sacrificing quality) —  allowing you more time to accomplish other tasks, making you more efficient and even promotable in terms of pay raise and in terms of promotable to other positions with higher earnings — and even teach new staff members.